Memory Game The Endocrine SystemOnline version Review the organs of the endocrine system and their functions. by Kathy Dilliplane Increase heart rate during a "Fight or Flight" response Regulates the female reproductive system Pancreas Regulates calcium levels in the blood. Thymus Pituitary The body's "Master Gland" that controls the other endocrine organs. Pineal Gland Regulate the male reproductive system Regulates blood sugar levels Produces melatonin to regulate sleep cycles Ovaries Parathyroid Glands Thyroid Helps the immune system recognize and fight pathogens Adrenal Glands Testes Regulates growth and metabolism